It is not because there is no support for Win98 machines. I have Win98 running on a modern setup, but it has something to do with HW compatibility and usage of ram.
To have such a OS running stable on any modern platform, it is best to install it on VMware. Once I set the install ram from 128mb I can adjust it to 512mb. Graphic games run fine, audio, and network.
Actually instead of running compatibility mode in Windows 7 I use VMware for all my legacy XP and Pre-XP hardware. I have several devices that are not compatible with W7, but work just fine in VMWare.
If you have the licenses you can have the Vmware 98 image running on any machine(s) you want. I have all my old PC games mounted in my main PC then transferred to the Epia PC that is disc less.
I have not yet found an old PC requiring speed reduction when in VMware. Heck even Star Control works (rather quickly) and that was for a 8088.
If you format your VHD to Fat32 you can even boot in DOS. With the duplication facility I do not have to Ghost any drive. Mame .84 works fine, but I have not tried VPinball yet.
Download the free VMware player, and try it out.
